HTS Chapter 31 — duty rates by code

USITC 2026HTSRev10 · 41 lines. Each code links to its current duty picture and recent changes.

3101.00.00.00 — Animal or vegetable fertilizers, whether or not mixed together or chemically treated; fertilizers produced by the mixing or chemical treatment of animal or vegetable products
3102.10.00 — Urea, whether or not in aqueous solution
3102.21.00.00 — Ammonium sulfate
3102.29.00.00 — Other
3102.30.00.00 — Ammonium nitrate, whether or not in aqueous solution
3102.40.00.00 — Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances
3102.50.00.00 — Sodium nitrate
3102.60.00.00 — Double salts and mixtures of calcium nitrate and ammonium nitrate
3102.80.00.00 — Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution
3102.90.01.00 — Other, including mixtures not specified in the foregoing subheadings
3103.11.00.00 — Containing by weight 35 percent or more of diphosphorous pentaoxide (P2O5)
3103.19.00.00 — Other
3103.90.01.00 — Other
3104.20.00 — Potassium chloride
3104.30.00.00 — Potassium sulfate
3104.90.01.00 — Other
3105.10.00.00 — Products of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg
3105.20.00.00 — Mineral or chemical fertilizers containing the three fertilizing elements nitrogen, phosphorus and potassium
3105.30.00.00 — Diammonium hydrogenorthophosphate (Diammonium phosphate)
3105.40.00 — Ammonium dihydrogenorthophosphate (Monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (Diammonium phosphate)
3105.51.00.00 — Containing nitrates and phosphates
3105.59.00.00 — Other
3105.60.00.00 — Mineral or chemical fertilizers containing the two fertilizing elements phosphorus and potassium
3105.90.00 — Other

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